Improvement in injectors



l E. KORTING.

:NJ-Ecran.-

Patented N'ov. 21,1876.

lim...

NITED STATES PATENT OFFICE.

ERNST KORTING, OF HANOVER, PRSSIA.y

IMPROVEMENT IN INJECTORS.

Specification forming part of Letters Patent No. 184,631 ,dated November 21, 1876; application filed September 14, 1876.

To all whom it may concern:

Be it known that I, ERNST KORTING, of Hanover, in the Kingdom of Prussia, have invented certain Improvements in Injectors, of which the following is a specification:

The object of my invention is to feed water at a higher temperature, to make the apparatus self-regulating with lixed nozzles, to make its starting and action instantaneous and more positive, and to reduce to a minimum the quantity ot' the steam required for the induction of the jet.

For this purpose l divide the work to be done between several apparatuses, each apparatus complete in itself, containing a steamnozzle, a combining-tube, and a diverging tube, in such a manner that the first apparatus takes the whole quantity ofthe liquid and delivers it to the second under pressure, the second kto the third under increased pressure,

^ and so on repeatedly, until the liquid has acquired the necessary pressure or speed.

In the accompanying drawings, only two apparatuses, with central steam-nozzles and annular water nozzles surrounding them, are shown; but the number may be increased indenitely, as may also the arrangement be reversed-that is to say, central water-nozzles used with annular steam-nozzles surrounding them. The form or the combination may also be changed from that shown-as, for example, by arranging the several apparatuses side by side, they may be placed in line or in any other convenient form, the object being to have a communication between the discharge end ot' one apparatus and the water-space of the next one.

Figure l is a longitudinal section of a combination ot' two apparatuses.

a1 is the steam-nozzle, b1 the combiningtube, and c the diver-ging tube, of the iirst apparatus. a2 is the steam nozzle, b2 the combining-tube, and c2 the diverging tube, of the second apparatus. O is the common steamchamber; D, the Water-inlet; E E, a passage leading the discharge ot' the first instrument to the water-space ot' the second; F, the discharge; G, a starting-cock, if the instrument be used as a boiler-feeder; and H, a checkvalve forming a communication between the ldischarge end of'the apparatus and the discharge end of the primary pump or apparatus.

Fig. 2 is a cross-section on the line A B of Fig. l. Fig'. 3 is a modilication of the connection between the combining and diverging tubes ort' the iirst apparatus. Fig. 4 shows a nxoditication ot' the steam-charnber, so that the steam-nozzles may be fitted with spindles or valves. Fig. 5 shows` a modification ofthe discharge, each apparatus being fitted with a separate starting-cock. Fig. 6 shows another modilica'tion ofthe discharge, consisting in vone starting-cock and a self-closing valve from the discharge end of each apparatus communicating therewith.

The same letters denote corresponding parts. The principle involved in the invention is, that the water is delivered from one apparatus to the next one under pressure, which al- Vlows the water to be of high temperature,

even above boiling-point, Without Vinterfering with the proper condensation of the steam. Passing the water from one apparatus to the next one, the pressure and temperature of the water are successively and correspondingly increased until Lt is discharged from the last one at the re ured pressure and maximum temperature. By this means the tirst apparatus, with its proportionately small steam-nozzle, acts as the governorfor the rest, increasing and decreasing the quantity ot' the water which it delivers to the following` apparatus with the increase and decrease of the steampressure, and thereby making the action of the apparatus self-regulating without adjustment ot' parts, or the necessity of having an open overtlow to the atmosphere.

By reason of the proportionately small steamnozzle in the rst instrument the water can be taken very hot, up to 1750 Fahrenheit, and as the combination ot' the steam and water in the following instruments takes place under pressure, a high vtemperature does not interfere with a proper condensation ot' the steam, and the discharge out of the last apparatus can be made much above the boiling-point.

This successive increasing of the pressure ot' the water is also conducive to the proper utilization ot the heat contained in the steam, as no loss takes place through sudden shocks,

and the whole heat ofthe steam is transferred? tothe discharge. Y

The valve G is for the purpose of enabling` the pump to be started readily when arranged to Work against a high counterpressure, the

valve being opened when the operation is tocommence, so that the pump will start against the mere pressure of the atmosphere, instead of against the high pressure to which it is nally opposed; The check-valve also facilitates the starting,r of the apparatus by allowing the steam and fluid to pass from the clelivery end ot' the primary pump or apparatus paratuses in such manner thatoneldischarges into the eombinngehamher ot" `'the next.

2. The combination oftwoor more steamjettapparatuses in such a manner thatone discharges into the combiningehamber of the next one, the rst oneof these apparatuses having no overtlow communicating with the' atmosphere.

3. In a steam-jet apparatus consisting of two or more jet-pumps delivering one to another, an outlet-valye, G, located at the final delivery ot' the apparatus, `and one or more valves. H, forming a communication between the tinal outlet and the outlet or discharge ends of the primary pump or pumps, substantially as shown,y for the purpose of enabling the apparatus to startqnickly.

E. Komme;`

Witnesses A. M; SIMON, O'rmo DAVISSON. 

